Senior Microsoft 365 & Enterprise Messaging Engineer

Emerson Electric Co; Dublin; On-site; EUR 90,000 - 120,000; Full time

Job summary

Oracle Cloud Infrastructure (OCI) seeks a senior Microsoft 365 Engineer to own and optimize Microsoft 365 services, including Exchange Online, Teams, SharePoint Online, and OneDrive for Business. You will manage enterprise messaging, enforce security controls, and partner with global teams to deliver reliable collaboration infrastructure.

The role emphasizes hands-on engineering, platform improvements, and operational support in a large-scale environment, with on-call rotation and

Qualifications

• 6+ years hands-on experience administering Microsoft 365 in enterprise environments.
• Strong expertise in Exchange Online, enterprise messaging architecture, mail flow, and troubleshooting.
• Extensive hands-on experience administering Proofpoint in enterprise environments, ideally 6+ years.
• Experience with email security and authentication technologies, including DMARC, SPF, and DKIM.
• Strong knowledge of Microsoft Entra ID (Azure AD), Active Directory, and identity security technologies.
• Experience supporting Microsoft Teams, SharePoint Online, and OneDrive for Business.
• PowerShell automation experience in Microsoft 365 admin processes.

Responsibilities

• Administer, maintain, and optimize Microsoft 365 services, including Exchange Online, Teams, SharePoint Online, OneDrive for Business, Entra ID, and Purview.
• Manage enterprise messaging infrastructure, including mail flow, routing, transport rules, and email security.
• Administer and optimize Proofpoint email security solutions, ensuring secure and reliable messaging across the organization.
• Implement and maintain email authentication and security technologies such as DMARC, SPF, and DKIM.
• Troubleshoot complex technical issues across Microsoft 365, enterprise messaging, identity, and infrastructure services.
• Support identity and access management technologies, including Active Directory, Conditional Access, MFA, SSO, and Privileged Identity Management.
• Improve operational efficiency through PowerShell automation of Microsoft 365 tasks.
• Contribute to security, compliance, and governance initiatives using Microsoft Defender for Office 365 and Microsoft Purview.
• Independently drive technical projects and collaborate with distributed engineering teams.

Skills

Microsoft 365

Exchange Online

Email security

PowerShell

Identity management

Microsoft Entra ID

Tools

Proofpoint

Microsoft Defender for Office 365

Microsoft Purview

Microsoft Entra ID

Job description

Oracle Cloud Infrastructure (OCI) seeks a senior Microsoft 365 Engineer to own and optimize Microsoft 365 services, including Exchange Online, Teams, SharePoint Online, and OneDrive for Business. You will manage enterprise messaging, enforce security controls, and partner with global teams to deliver reliable collaboration infrastructure.

The role emphasizes hands-on engineering, platform improvements, and operational support in a large-scale environment, with on-call rotation and